Article ID: 37483
Article Last Modified on 11/21/2006
APPLIES TO
- Microsoft QuickBasic 4.0
- Microsoft QuickBASIC 4.0b
- Microsoft QuickBasic 4.5 for MS-DOS
- Microsoft BASIC Compiler 6.0
- Microsoft BASIC Compiler 6.0b
This article was previously published under Q37483
SUMMARY
When chaining from a program that does not trap errors (ON ERROR GOTO) to a program that does, a "RETURN without GOSUB" error message can appear. This occurs only when the programs are compiled requiring the run-time library BRUN4x.EXE.
Because the run-time system is initialized in the first program, you need to compile both programs with BC /E to support error trapping.
Another way to avoid this problem is to compile both programs with BC /O to make them stand alone. With this process, the chaining program does not require compiling with /E.
This information applies to Microsoft QuickBasic Versions 4.00, 4.00b, and 4.50 and to Microsoft Basic Compiler Versions 6.00 and 6.00b for MS-DOS and MS OS/2. The code below does not generate the error described above with Microsoft Basic PDS Version 7.00.
MORE INFORMATION
The programs below, when compiled without /O, will give the "RETURN without GOSUB" run-time error message in the second program.
Code Examples
The first program is as follows:
' TEST.BAS
CHAIN "test1"
END
The second program is as follows:
' TEST1.BAS
ON ERROR GOTO 0
K% = 1
ON K% GOSUB handle
END
handle:
A$ = INKEY$: IF A$ = "" THEN GOTO handler
RETURN
Additional query words: QuickBas BasicCom
Keywords: KB37483
